The line has been the key tool in creating a signature style by Antwerp-based designers Fien Muller and Hannes Van Severen, known as Studio Muller Van Severen. Their language is simple, yet complex, sophisticated, humoristic, yet sincere, airy, and fresh, sort of continuation to the Minimalist vocabulary initiated in the 60s and 70s by Donald Judd and Sol Lewitt.